Just a question for those of you with experience using ear probe microphones, do you ever hear the heartbeat? Iâve built a couple of in-ear microphones, and can hear my own heartbeat, but the quality is relatively poor, and only works
> in very low-noise conditions. I was looking in to using dedicated probe mics, such as Etymotic ER-7C (http://www.etymotic.com/pro/er7c-ts.aspx) and whether that might give me a better
signal-to-noise > ratio, but just wondered if anyone has any experience of this before I buy some.

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Thanks

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Sam Jelfs

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Sam Jelfs

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Research Scientist

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Philips Research Laboratories, Eindhoven

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Smart Sensing & Analysis

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Address : High Tech Campus 36

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5656 AE Eindhoven

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The Netherlands

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Tel: +31 (0)40 27 42402

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e-Mail: sam.jelfs@xxxxxxxxxxx

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